Bring modern technology into your classroom with this raybox for the 21st century.This unit is for studying ray optics. It contains 3 laser diode modules. The power of each diode is less than 1mW and the wavelength is 650nm.The RayZer Lightbox is supplied with a plug top power supply and is mounted on a white plastic baseboard. The beams may be switched between one beam and three beams.Paper can be placed on top of the baseboard and the rays traced. If required the unit can be used with a 9V PP3 type battery and our battery connector.Classroom management is eased as no blackout is required to operate the RayZer.When the RayZer is switched to one beam and a diffraction grating is placed in the path of the beam the wavelength of the laser light can be calculated.The RayZer has been tested for safety and it is class 2 to the current versions of IEC 60825-1 and BSEN 60825-1.Full instructions are supplied.Wavelength: 650nmLaser Class: Class 2Diode Power: <1mWAssociated Products include:Diffraction Gratings (B8A46279 B8A46280 B8A46231)Lens Set for RayZer Lightbox (B8R07807)